Wood saw attachment for tractors



Jan. 2, 1951 c, COOK AL 2,536,910

WOOD SAW ATTACHMENT FOR 'TRACTORS Filed May 18, 1945 2 Sheets-Sheet l LO INVENTOR. CURTISS L COOK I FFE R ISPURLING WITNESS- BY 1/}? 4 Q; I W M FORNEYS.

Jan; 2, 1951 C. L. COOK ETAL WOOD SAW ATTACHMENT FOR TRACTORS 2 Sheets-Sheet 2 Filed May 18, 1945 INVENTOR. CURTISS L. CQOK Y R. SPURLIN WITNESS TTORNEYS.

i atented Jan. 2, 195i 4 WOOD SAW ATTACHMENT FOR TRACTOR/S Curtiss L. Cook and Jeffrey R. Spurling, Syracuse, N. Y., assignor to Syracuse Chilled Plow Co., Inc., Syracuse, N. Y., a corporation of New York Application May 18, 1945, Serial No. 594,550

9 Claims.

Thepresent invention relates generally to agricultural machines and more particularly to attachments adapted to be mounted on a farm tractor or the like.

The object and general nature of the present invention is the provision of an attachment adapted to be mounted on the rear portion of a farm tractor and including an operating part connected to be driven from the power take-off of the tractor. More particularly, it is a feature of this invention to provide an attachment of this nature with means whereby the work carrier thereof is shiftable toward and away from the operating member by a power unit mounted on the tractor, such as, for example, the power lift unit which normally forms a part of the tractor. It is particularly a feature of this invention to provide a wood saw attachment that not only is adapted to be mounted easily and quickly onto the tractor, and easily and quickly removed therefrom, but which is easily and conveniently controlled by virtu of connecting the work carrier with the power lift unit of the tractor so that the movement of the wood into and away from the saw may be performed without effort and may be easily and accurately controlled. More especially, it is a feature of this invention to provide means on the attachment to be connected with the tractor control for the power lift unit whereby the movement of the work carrier may be controlled from a point adjacent the attachment, preferably closely adjacent the work carrier under which the wood to be sawed is placed.

These and other objects and advantages of the present invention will be apparent to those skilled in the, art after a consideration of the following detailed description, taken in conjunction with the accompanying drawings in which one form of our invention has been illustrated.

In the drawings:

Figure l is a plan view of a wood saw attachment in which the principles of the present invention have been incorporated.

Figure 2 is a side view of the attachment shown in Figure 1.

Referring now to the drawings, the tractor on which the attachment, with which the present invention is more particularly concerned, is mounted as indicated by reference numeral 1 and comprises a motor unit 2 which also serves as the main frame of the tractor, the rear portion of which is supported by a rear axle structure 3, including a pair of drop axle housings 4. Journaled in each of the drop housings 4 is a laterally outwardly extendin axle shaft 5 on which the associated rear wheel 6 is fixed. The tractor I also includes a power take-01f unit I0, which includes a power take-01f support housing I l and a drive pulley l2 mounted for rotation about a transverse axle. By suitable controls, including a clutch or the like (not shown), power may be delivered to the power take-01f pulley I2 whenever the motor is running and entirely irrespective of whether or not the tractor is moving, as in conventional tractors. The tractor I also includes a power lift unit [5 of the hydraulic type. This unit includes a piston and cylinder device it, control mechanism ll therefor, comprising a valve lever I8 normally operated manually, and an operating power lift shaft l9 that is journaled in extensions 2| forming a part of the casing of cylinder unit [6. A pair of arms 22 are fixed to the power 11ft shaft 19. The drawbar of the tractor is indicated in its entirety by the reference numeral 25 and comprises right and left hand members 26 and 21, pivotally connected, as by studs 28, to the forward sides of the drop housings 4. The rear ends of the drawbar members 26 and 21 are rigidly secured, as by welding,

. to a transverse bar 29. An implement-receiving lug 3| is secured as by welding to the central portion on the transverse bar 29 and extends enerally forwardly, being apertured, as at 32, to receive fastening means by which the implement attachment may be held in place. Various types and kinds of implements may be connected to the drawbar 25. In some cases these implement attachments may swing about the transverse axis defined by the studs 28, and in other cases it may b desired, as in this case, to fix the drawbar 25 against vertical swinging, which may readily be done by suitable clamps or stops 33 (Figure 1) which engage the drawbar members 26 and 21 and are inserted in openings 34 formed in the rear portion of the drop housings 4, as shown in Figure 2.

The wood saw attachment, with which the present invention is more particularly concerned, is indicated in its entirety by the reference numeral 40. The wood saw attachment comprises a support or main frame 4! which preferably is made up of two longitudinally extending laterally spaced channels 43 and 44 which are connected together at their front andrear ends by cross pieces 45 and 46, the ends of which are bent over and bolted, as at 41, to the channels. The flanges of the channels 43 and 44 preferably face inwardly in order to form guideways for the rollers upon which the work carrier,

indicated in its entirety by the reference numeral effort so far as pushing the wood'into the saw is concerned. The push plate I31 and rod I34 may be actuated not only by the hands of the operator but by his knee or leg or some other por-- tion of his body while standing in a more or less fixed position on the ground. As mentioned above, as soon as pressure on the plate I3! is relieved, the carrier is automatically shifted rearwardly away from the saw.

In some tractors the power operated unit I! may be a single acting piston and cylinder device, rather than a double acting unit. In that case, we provide a return spring MB and connect it at its rear end by a bracket [4! to the frame bar 43. The front end of the spring MB is connected to a stud I 32 that is fixed in any suitable way to the arm 95, as best shown in Figure 1. Thus, the power operated unit may, if single acting, be operated to shift the carrier toward the saw, under the control of the valve l8 and push bar [31, but when pressure is released from the latter, which releases the oil in the cylinder it, the spring I40 will act to shift the carrier rearwardly.

While we have shown and described above the preferred structure in which the principles of the present invention have been incorporated, it is to be understood that our invention is not to be limited to the particular details shown and described above, but that, in fact, widely different means may be employed in the broader aspects of our invention.

What we claim, therefore, and desire to secure by Letters Patent is:

1. An attachment for use with a tractor having a power take-01f, a power lift unit, and a control lever for the latter, said attachment comprising a support, an operating member carried thereby, means for mounting said support on the tractor, means for driving said operating member from said power take-01f, a work carrier shiftable relative to said support and movable toward and away from said power operated member, means for connecting said work carrier with said tractor power lift for shifting the work carrier along said support and toward and away from said power operated member by power derived from the tractor power lift, and means on said support connectible to said control lever for operating the tractor power lift to shift said work carrier.

2. An attachment for use with a tractor having a power take-01f unit and a power operated um't including a movable valve for controlling the operation of said power operated unit, said attachment comprising a support, means for rigidly attaching said support to the tractor, a work carrier shiftable relative to said support, a saw rotatably mounted on said support, means for driving said saw from the tractor power take-01f, said work carrier being shiftable toward and away from said saw, means operated by said power operated unit on the tractor for shifting said Work carrier relative to said saw, and control means movably mounted on said support and connected with said valve for operatin the latter to cause said power unit to shift said carrier, said control means being movable on said support in the same direction the carrier is moved by said power operated unit in response to a movement of said valve in said same direction.

3. An attachment for a tractor havin a power lift unit including a pair of rockable arms, said attachment comprising means serving as a frame, a rockshaft thereon, arms carried by said rockshaft, a part shiftable relative to said frame means and supported at one end on the latter,

assa'oio means for supporting the other end of said part on said rockshaft arms, and link means con-- necting said rockshaft with the power lift unit arms, whereby operation of the tractor p'ower liftshifts said shiftable part. 1

4. A wood saw attachment for tractors and thelike having a power lift unit including rockablearms and means for controlling the same, said, attachment comprisin frame means including a pair of channels, a rockshaft rockably mounted at one end of said frame channels, a work carrier comprising a transverse work receiving unit and a pair of generally longitudinally extendin members, a pair of arms on said rockshaft pivotally connected with said members adjacent'their inner ends, means including a pair of rollers movable along said channels for supporting the outer ends of said members opposite said rockshaft, and.

link means connecting said rockshaft with the tractor power lift arms, whereby operation of said power lift unit serves to rock said rockshaft and shift said work carrier.

5. An attachment for a tractor having operated implement lift and valve control means for operating said lift, said attachment compris ing a support adapted to be fixed to the tractor, an operating member on said support, a part movable toward and away from said member, means for connecting said part with said implement lift of the tractor to be actuated thereby, and auxiliary control means on said support and adapted. to be connected with said valve control means, said auxiliary control means including a first partslidable fore and aft on said support and a link: pivotally connected to said part and adapted to be: connected to said valve control means.

6. A power saw attachment for tractor and the like having a power take-01f and a power lift unit operable in opposite directions, said attachment comprising a support adapted to be fixed to the tractor so as to be supported en-- tirely on the tractor in' operation, a saw rotatably mounted on said support, means for driving said saw from the power take-off of the tractor, a shiftable work carrier mounted on said support for movement toward and away from said saw, a connection between said shiftable work carrier and said power lift unit of the tractor, a generally longitudinally extendin control member supported on the front and rear portions of said support and shiftable generally longitudinally thereon, means connecting the front end of said longitudinally shiftable control member with the tractor power lift unit for controlling the latter, means on the rear end of said longitudinally shiftable control member for facilitatin its movement by an operator at the rear of said attach ment, and spring means actin between said support and said control member for normally urging the tractor power lift unit into a position causing the work carrier to be moved away from said saw. 7

'7. An attachment for farm tractors and the like having a power take-off pulley, a power unit, and a fore and aft movable element for controlling said unit, said attachment comprising a support, a driven part mounted thereon including a driven pulley mounted for rotation about a transverse axis, means for swingably mounting said support on the tractor for movement about a transverse axi spaced from said first mentioned axis, a driving belt adapted to be trained over said pulleys, an adjustable part connected with said support and adapted to be connected with the tractor for holding said suport in different a power positions relative. to the tractomwso: QS tO-EpIOViGG'C end' ofzfthe tractor,- said"attabhmentrconiprising:a-= fo'r -t securin sand;maintainingethe@desired adjust?" sup'pdrt; a belt-driven operating'Emeniber :rotata ment of: said, belt; an ioperating-xpar-thmevablyr blyacarriedxon "saidsupport; means zfor swing+ can-triedv by;saidsupp0rt' and=adapted=to-.be 'oper-ae ably veonn'ecting; ;saic1 support with =-the..rearipor-" tively connected with the:*tra.otor powei iunit to 5 tion of the: tractor so as tobe ntir'elysupported be; actuated: 1 thereby; and-- -a.-;-contro1- member on the =tracto'r, said operating'imember "beings"; mmmtect for generally;.-fore and: aft movement adapted-tome driven by a belt trainede over-said on-xsaidsupport' and adapted to'beconnected with powertake off pulleyionthe tractor, said support said movableipflweriunitcontrolling-elementzfor being swingable in a direction 'relative"to =the actuatingw the slatterr movement of-said-c0ntro1:;iotractorsfor' changing I the tension in the "beltya member relative.tosaid:support' accommodating -14 manual-1y; adjustable "link" extending qfrorm said anwmovementi ofy-thet-attachmentsupport -pr0- support toa point on the tractor general'lyinthe vidednfor-fl by; said ada'ustable ---par-t'ineseouringaor: same direction as said belt, whereby changing the maintaining thedesiredv adjustmentoisaid behtasi effective length of said. connection serves to ad- BZ: An-a-ttachment for atractorfihavingrapowet 15 just the-tension in sa'id belt, a-member mounted liftnnitrsaidattachmentcomprisingsmeansserv-- on "said support for -movement-tow-ardand away. inggasa frameyzmeans for-=rigid1 ;connectin =sai'd from said belt-driven operating -member' and frame withethe tractoresorthat-a portion-.of-saidmeansfonc'onnecting said movable member with": framoflextends generally horizontallyrearwardiy; said tractor powerliftof 'r-the-tractorr a rockshaft 'onsaid :frame-me'ans'fl CURTISS-L. COOK. adjacentthe for-ward :portiom thereof: :but r reare: JEFFREY Rm SPURLING. wardly of the tractor, arms carried by-osaid roc'k- .t V shaft avpart-l-shiftable re1ative-t0 -said -frame REFERENCES CITED means and mov bly DP B -"a s" T -e d' The "following' referencevare of reord in'th'e onhthefrearr-pottion of the horizontal portion of i 1 1 t is; npajgent said frameme'ans, meansfor-supporting the for-s m v ward -endiofsaid part on said rookshaft arms and UNIED STATES PAIENTS I linkslmeansq connectingqsaidrockshaftwith the" Numbeli Name ate power Jift unit,whereby operation of-the tractor 396,935 Ivey u- Jan. 29; 188 9- power liftwshifts -said shiftabl-e part. :54}. 414,4 p? NOV; 5, 1889- 9. :An attachment-for.a-tractorhavinga power 1,321,917 Hnsel V; 1919 liftgandaa power take-01fpulleyadjacentthe rear-.1 2,350,880 Del t a J e- 1 4 

